deformities of mandibular with normal jaw, prognathism and petrognathia

abnormality advancement congenital corrective cosmetic cranio defects deformities deformity dentofacial disorder distal dysfunction facial health care healthcare jaw malocclusion mandibular maxilla medical medicine normal obstructive occlusion orthodontic orthognathic orthognathism petrognathia poster problem progenism prognathism protruding protrusion receding reconstruction resistance surgical symptom syndrome underbite vector